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the need arises is the most popular phrase on the web.

this need arises 192,600 results on the web	the need arises 13,890,000 results on the web More popular!
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It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	For radionuclides not listed in Table A, the competent authority shall assign appropriate values for the quantities and concentrations of activity per unit mass where the need arises. It shall be reviewed, if the need arises, in accordance with Article 15 of Regulation (EC) No 1268/1999. For radionuclides not listed in Table A, Part 1 the competent authority shall assign appropriate values for the quantities and concentrations of activity per unit mass where the need arises. We can just see each other when the need arises. 4. Implementing Decisions taken by the Council shall be updated as the need arises and, at the latest, every two months. The employer shall take the requisite measures to provide the necessary warning and other communication systems to enable assistance, escape and rescue operations to be launched immediately if the need arises. Implementing Decisions taken by the Council shall be updated as the need arises and, at the latest, every two months. Detailed rules for implementing this Regulation shall be adopted as the need arises in accordance with the procedure laid down in Article 13 of Regulation (EEC) No 729/70.

this need arises

192,600 results on the web

the need arises

13,890,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

For radionuclides not listed in Table A, the competent authority shall assign appropriate values for the quantities and concentrations of activity per unit mass where the need arises.
It shall be reviewed, if the need arises, in accordance with Article 15 of Regulation (EC) No 1268/1999.
For radionuclides not listed in Table A, Part 1 the competent authority shall assign appropriate values for the quantities and concentrations of activity per unit mass where the need arises.
We can just see each other when the need arises.
4. Implementing Decisions taken by the Council shall be updated as the need arises and, at the latest, every two months.
The employer shall take the requisite measures to provide the necessary warning and other communication systems to enable assistance, escape and rescue operations to be launched immediately if the need arises.
Implementing Decisions taken by the Council shall be updated as the need arises and, at the latest, every two months.
Detailed rules for implementing this Regulation shall be adopted as the need arises in accordance with the procedure laid down in Article 13 of Regulation (EEC) No 729/70.